Quabtz-cetjshee



W. H. HOWLAND.

Quarti Crusher.

Patented May 4, r858.

UNITED STATES PATENT OFFICE.

VILLIAM H. HOVVLAND, OF SACRAMENTO, CALIFORNIA.

QUARTZ-CRUSHER.

Specification of Letters Patent No. 20,157, dated May 4., 1858.

To all whom it may concern:

Be it known that I, WV. H. HOWLAND, of Sacramento city, in the county ofSacramento and State of California, have in vented a new and ImprovedQuartz-Crushing Machine; and I do hereby declare that the following is afull, clear, and exact description of the same, reference being had tothe annexed drawings, making a part of this specification, in which-Figure 1, is a vertical central section of the mortar and frame of myimprovement the working parts not being bisected. Fig. 2, is ahorizontal section of the framing taken in the line (00) Fig. 1.

Similar letters of reference indicate corresponding parts in the twofigures.

The object of this invention is to obtain a very compact and eiiicientmachine, one that will not be liable to get out of repair, and havingits parts so arranged that each will perform its full portion of thework to be accomplished.

The invention is designed for crushing auriferous quartz.

This invention consists in the arrangement and combination of an annularmortar and pestle substantially as and for the purpose herein set forth;it also consists in a novel arrangement of an annular feeding chamber aswill hereafter appear.

To enable those skilled in the art to fully understand and construct myinvention I will proceed to describe it.

A represents an annular chamber which is the mortar of the machine. Thischamber is formed in a circular casting A which serves as the base ofthe machine. and around the upper part of the chamber A an annulartrough B is formed on its outer side. A vertical upright G projects fromthe center of the casting, and a vertical arbor or shaft D is stepped onits upper end, the upper end of said arbor having its bearing at thecenter of a circular plate E, which is supported by uprights (a) thelower ends of which are secured to the base or casting A between thechamber A and trough B. A circular plate F, is attached to the upperpart of the upright C, as shown in Fig. 1. The base A, with trough B,and upright G are cast in one piece.

On the arbor or shaft D, a cam G is placed. This cam is cogged ortoothed on its lower surface as shown at (b) Fig. 1. The upper surfaceor face of the cam is formed of two semicircular inclined flanches (c)(c) placed directly opposite each other and in reverse positions, thatis, the elevated end of one flanch is connected to or joins thedepressed end of the other flanch. A pinion (d) gears into the underside of the cam G, said pinion being on a driving shaft H.

lVithin the annular chamber or mortar A a series of circular dies I areplaced. These dies rest on the bottom of the mortar and J represents aseries of pestles of cylindrical form. These pestles are constructed ofproper weight and are attached to rods K, the upper ends of which passthrough the plate E which serves as a guide for them. Each pestle rod Khas a circular disk (6) upon it, and the face sides of the cam or theinclined flanches (c) (c) act against these disks.

Around the upright portions C of the casting or base A a cylinder L isplaced. This cylinder is of sufficient diameter to allow a requisitespace between its inner surface and the upright C to form a feed passageleading into the mortar A. See Fig. 1.

To the upper part of the mortar A a cylinder or curb M is placed andthis cylinder or curb has screens N fitted in it all around the mortar,the lower ends of said screens being quite near the upper edges of themortar A and trough B. The upper edge of the cylinder L has a flanch (aprojecting horizontally from it.

Motion is given the shaft H in any proper manner and the quartz, reducedto a requisite size by any proper means, is fed down the space betweenthe cylinderLand upright G, into the mortar A, a requisite quantlty ofwater being also fed into the mortar with the quartz. The cam G isrotated by the gearing (6) (cl) and the inclined ledges (c) (0) raisethe pestles J by acting against the disks (6) and as the ledges (c) actagainst said disks at one side of their centers the pestles will berotated as they are raised. The pestles fall by their own gravity as theprominent portions of the ledges (c) (0) pass from underneath them. Thequartz of course is crushed by the descent of the pestles J, and thepulp by the motion of the pestles passes through the screens N into thetrough B.

By having the pestles J rotate as they ascend each portion of theirbottoms are subjected to an equal wear and they will be the end pestles,the bulk of the work being done by the central ones. This difficulty isobviated by my improvement. By having the cam Gr constructed andarranged so as "to actuate the pestles as shown an equal bearing isobtained all around the cam, and there is no loss of power, as is thecase where tappets on a rotating shaft are employed for the gearing bywhich the cam is rotated is placed directly under the ledges (a) whichact against the disks (6). Another advantage attending my improvement isthat the quartz being fed into the mortar A between the inner side ofthe cylinder L and upright G as shown the quartz may be fed into themortar at any point around the machine, and the screens N will not beinjured by quartz falling against them'as is frequently the case in theordinary machines.

'I do not claim broadly the raising of a pestle or weight by having ahorizontal cam acting upon a pulley or circular disk on its end or shaftfor this is a device that has been previously used for analogouspurposes for operating rock drills, &c.; but, having thus described myinvention- What I claim as new and desire to secure by Letters Patent,is,

"l. The arrangement and combination of the annular mortar A, and pestlesJ, substantially as and for the purposes herein set forth.

2. Having an annular feeding chamber between the upright C, and theinner surface of the cylinder L, arranged substantially as and for thepurposes set forth.

WILLIAM H. HOWVLAND.

Witnesses:

I. H. GAss, 7 JOHN SEECOM.

